Luggage Tags for a Checked Bag: The Airline Requires One and Names What Goes On It

Affiliate disclosure: some links in this article are tracked partner links; we may earn a commission at no cost to you, and it never changes what we recommend.

The verdict

1. A tag is not optional on a checked bag, and the airline names what goes on it. Southwest's contract of carriage states that "Each piece of Baggage tendered to Southwest must have a current identification tag or label with the Passenger’s name, address, and telephone number." Air Canada tells travellers to "Attach ID tags to the outside of your bags" and separately to "Place a baggage ID card inside each bag and include your destination, home address, and contact info."
2. Those instructions collide head-on with how the modern ID systems are built, and you should know which side you are taking. Travel Sentry's TS ID is sold on the opposite principle: "Your name, email address, and phone number are never displayed on your belongings." A code-based tag satisfies a finder but not, on a literal reading, the contract above.
3. Buy for the attachment and the body, because those are the only published specs. Eagle Creek's Reflective Luggage Tag publishes "6 x 3 in. (15 x 7 cm)", "0.7 oz. (20 g)", a "Durable paracord loop" and an "ID slip pocket with mesh window" at "$15.00". The Knog Scout Travel Smart tag publishes "3.5 x 1.25 x 0.25 in. (8.8 x 3.3 x 0.7 cm)", "1.2 oz. (35 g)", an "anti-tamper bolt & braided stainless-steel cable" and an "85 dB alarm" at "$59.95".

The requirement nobody reads

Every document quoted here was read on 22 September 2026, and every price is the maker's own as of September 2026.

Start with the contract, because it is the only part of this subject that is binding. Southwest defines checked baggage as baggage "for which Southwest has issued a baggage claim check and to which Southwest or Passenger affixed a baggage tag," and then sets a condition of acceptance: the bag "must have a current identification tag or label with the Passenger’s name, address, and telephone number."

That is a requirement, not a suggestion, and it names three fields. Air Canada's packing guidance splits the same information across two places — an ID tag on the outside, and inside the bag "a baggage ID card" carrying "your destination, home address, and contact info." It also adds two instructions that are easy to skip and cost nothing: "Remove all old airline tags" and "Please do not use bungee cords, ties, or straps on your luggage."

The old-tag instruction is the one that actually causes misroutes. A stale barcode from a previous trip is a machine-readable claim that your bag belongs somewhere else.

The privacy problem, stated honestly

Here is the tension, and we are not going to smooth it over.

Most tag advice tells you to keep your home address off the exterior. The carrier's contract asks for it. And the code-based systems built by the company that certifies luggage locks are designed specifically so the details never appear: Travel Sentry's TS ID states that "Your name, email address, and phone number are never displayed on your belongings," and that "contact details are shared securely through the Travel Sentry system." Its sister system, OKOBAN, works the same way — "an Okoban tracking tag does not display personal information. Instead, the UID links securely to your registered contact details."

Both are free and permanent: TS ID offers "Free, lifetime registration" with the ID remaining "active for life with no ongoing fees or subscriptions," and OKOBAN registration takes "just a few minutes" after which "your item is protected for life at no cost."

The practical resolution is to carry both layers. A visible tag with a name and a reachable phone number satisfies the contract and the honest finder at the carousel. A covered card inside the bag carries the fuller detail the airline asks for, where nobody reads it off a belt. A registered code is the third layer, and it is the one that works when the exterior tag has been torn off — which is the failure this category actually has.

How big the code systems are

The scale claims are published, and they are the reason a code is worth registering even if you never lose a bag.

OKOBAN states it is "Used by millions in 198 countries worldwide, with a system operating in over 2800 airport Lost & Found offices," and that consumers "have trusted OKOBAN for over 10 years." Travel Sentry's permanent-bag-tag pitch gives a sense of what the paper alternative costs: "2 million kilometers of single-use baggage tags are used each year," which it says "could wrap around the equator more than 50 times and cost the airline industry $500 million every year."

We are quoting those as the company's own claims rather than as audited figures — no third party we read verifies them. What they establish is that a lost-and-found desk in a large airport is likely to recognise a UID code, which is not true of a handwritten paper tag.

What a tag's spec sheet contains

Two published examples, at opposite ends of the category.

The Eagle Creek Reflective Luggage Tag publishes external dimensions of "6 x 3 in. (15 x 7 cm)", a weight of "0.7 oz. (20 g)", materials of "100% Recycled Polyester", a "Durable paracord loop", an "ID slip pocket with mesh window" and "a transparent window for your business card," at "$15.00" with "Easy 60-Day Returns". The loop is the spec that matters and it is the one most tags describe vaguely — paracord is a stated material rather than a stated breaking strain, but it is more than most pages give you.

The Knog Scout Travel Smart Luggage Tag, sold through the same retailer at "$59.95", publishes "3.5 x 1.25 x 0.25 in. (8.8 x 3.3 x 0.7 cm)", "1.2 oz. (35 g)", a body of "Glass Reinforced Nylon" and "Medical Grade Silicone", and a long feature list: a QR-coded "Digital ID", location through Apple's Find My network, a "motion-sensitive 85 dB alarm", attachment "using an anti-tamper bolt & braided stainless-steel cable", supply "with two cable lengths", "2- 4 months battery life (pending usage)", a low-battery notification at "just 20% remaining", operation of "up to 10 Scout devices" from one app, and a "2-Year Warranty". It is explicit about two limits: "Compatible with iOS only" and "This product is unable to ship to California."

It also publishes a claim worth reading precisely: it "Complies with FAA checked luggage regulations." That is the maker's statement about its own product and it is not the same as your airline's rule. Air Canada separately states that if a checked bag "includes a built-in charger, location tracking or other battery-powered technology, you’ll need to remove the battery," and that "Smart bags with non-removable batteries are not permitted as checked baggage." Read both, in that order, before you check anything with a cell in it.

The clock a tag cannot beat

A tag improves the odds of an honest return. It does nothing about the reporting deadline, and the deadline is where claims actually die.

Southwest states plainly that it "provides no guarantee or assurance that Baggage will arrive on the same flight as the Passenger." If the bag does not arrive, its contract requires you to report it and "receive a Baggage report number not later than four (4) hours" after the flight's arrival or the bag's receipt, and to return a completed loss claim form "within thirty (30) days of date of issue." Delayed-delivery charges are only paid on bags tendered "at least forty-five (45) minutes prior to the scheduled departure time."

And if the bag is never found, what recovery is worth is set outside the airline. Federal rules prescribe the notice a carrier must give: "Federal rules require any limit on an airline's baggage liability to be at least $4,700 per passenger." A tag improves the chance you never need that number.

Tag the bag, photograph it before you hand it over, and report it inside four hours. Where the maker's promise ends and the carrier's begins is mapped in what a luggage warranty covers and where airline damage goes.

Before the tag, the bag

None of this matters if the bag is refused. Southwest publishes the box as "62 inches in size (length + width + height)" with "Wheels and handles should be included when measuring." and "Up to 50 pounds each" — the explainer for that total is the 62-linear-inch rule, the gap between advertised and real size is in listed against exterior checked-bag dimensions, and you can check your own case with our airline sizer tool.

If a tag is going on a soft bag, the attachment has more to survive — the format's particular problems are in rolling duffels at checked size. If the lock is the other accessory on your list, which approved lock to buy is here. And if you are still choosing the case, the budget field is our under-two-hundred checked round-up.

What we could not verify

No tag maker publishes a breaking strain, a pull rating or a retention test for an attachment loop, so nothing here claims one loop survives a conveyor better than another. Materials are published; strengths are not.

OKOBAN's and Travel Sentry's scale figures are the company's own, unaudited by anyone we could read, and no publisher we would cite reports a recovery rate for tagged versus untagged bags. bagail.com returned 403 to our requests, so no figure from that brand appears here.

We could not find a US carrier that publishes what happens if you tender a bag with no identification tag at all, only the requirement that one be present. The consequence is unstated.

FAQ

What should I put on a luggage tag?

At minimum, what the carrier asks for. Southwest's contract of carriage requires a current identification tag or label carrying the passenger's name, address and telephone number. Air Canada asks for an ID tag outside and a card inside the bag with your destination, home address and contact details. If you would rather not display an address, a registered code tag is the alternative, because those systems are built so that your name, email and phone are never printed on the item.

Do luggage trackers count as smart bags?

Check the carrier rather than the product page. One tag maker states that its device complies with FAA checked luggage regulations. Air Canada separately states that a checked bag with a built-in charger, location tracking or other battery-powered technology needs the battery removed and carried into the cabin, and that smart bags with non-removable batteries are not permitted as checked baggage. Those are two different statements and should not be merged.

Are expensive luggage tags worth it?

It depends on which failure you are buying against. A fifteen-dollar reflective tag with a paracord loop and a card window addresses identification at the carousel. A sixty-dollar smart tag adds a QR contact page, location through a phone network, an 85-decibel alarm and a stainless-steel cable, and brings restrictions with it — one published model is iOS-only and cannot be shipped to California. Neither publishes a strength figure for its attachment.

How quickly do I have to report a missing checked bag?

Far more quickly than most people assume, and the window is in the contract rather than at the desk. Southwest will not consider a claim for loss or substantial delay unless you report it and receive a baggage report number within four hours of the flight's arrival or of receiving the bag, and a completed loss claim form must be returned within thirty days of issue. Damage has its own, separate window and must be reported in person at the airport.